baber/WOPTO huggingface dataset:
Patent GB-646631-A (GB)
Title: Improvements in and relating to the catalytic oxidation of ammonia to oxides of nitrogen
Inventor: SMITHELLS COLIN JAMES
IPC: C01B21/26
Filed: 1944-11-08
Abstract: A catalyst for the oxidation of ammonia comprises platinum or an alloy thereof, particularly a platinum-rhodium alloy, and is prepared by sintering a finely-divided mixture of the metal or alloy and one or more oxides which are stable under the sintering conditions, which may involve the pressure of a reducing gas. Alloys containing up to 10 per cent of rhodium are suitable, and the proportion of oxide may be from 0.01 to 10 per cent. Specified examples of oxides are those of (1) thorium; (2) one or more of calcium, strontium, barium, magnesium and beryllium; (3) one or more of zirconium, hafnium, cerium, and titanium; (4) aluminium; (5) one or more rare earth metals; (6) one or more metals of the fifth group; and (7) chromium sesquioxide.  The composted and sintered agglomerate is formed into wire, sheet, gauze, &c.  Specifications 306,382, [Class 1 (i)], 578,956, 645,541, 645,681, 645,682, 646,002, 646,003 and 646,004, [all in Group II], are referred to.
Patent GB-1188471-A (GB)
Title: A Cuff Link or like Fastening
Inventor: MORRIS OSWALD MORGAN
IPC: A44B5/00
Filed: 1968-05-09
Abstract: 1,188,471. Cuff links. METALINKS (WALES) Ltd. 18 March, 1969 [9 May, 1968], No. 22029/68. Heading A3H. A cuff link or like fastening includes a shank 7 formed as a loop, one end 8 of which is fixed to the body 9 of the cuff link, the other end having an integral rectangular section portion 10 for the pivotal mounting of a movable part of the cuff link and for co-operation with spring means carried by that part. The two arms of the loop which are substantially semicircular in cross-section, are pinched together at 8 and welded to the body 9. The portion 10 is received in slots in the movable part and is retained by a leaf spring.
Patent GB-1467033-A (GB)
Title: Method and apparatus for forming a multi-layer sheet material
IPC: B29C48/08
Filed: 1974-05-17
Abstract: 1467033 Laminates BELOIT CORP 17 May 1974 [11 June 1973] 22082/74 Headings B5A B5B and B5N A multilayer sheet material suitable for use in packaging is produced by combining together a substrate and two layers of thermoplastics material, the thermoplastics material for one of the layers being heated, before the layers are combined, to a high enough temperature to oxidize its resin and the thermoplastics material for the other layer being heated to a lower temperature below the oxidation temperature of its resin, the layer of higher temperature material then being disposed between the substrate and the layer of lower temperature material so that the odour of the higher temperature layer is contained by the substrate and the lower temperature layer. The thermoplastics material may be polyethylene, polypropylene, a modified polyethylene or ionomer and the substrate may be paper or an extruded film which may be heated to the temperature of the lower temperature layer. The higher temperature material may be heated to 620- 650 F. and the lower temperature material to 520-580 F. The multilayer sheet material may be made using apparatus comprising an extruder 11, metering valve 12, flow divider valve 13, dual slot extruder die 15, means 72 to heat one of the divided streams to a temperature high enough to oxidize the resin, means 73 to heat the other stream to a lower temperature and means 17, 20 to combine the two extruded layers 18, 19 with the substrate 16, the flow divider valve comprising a valve body 25 having an inlet 30 therein and spaced outlets for connection with insets of the dual slot extruder die, a passageway 31 in the valve body leading at right angles with respect to the inlet, a flow divider 41 slidably guided in the passageway and having a peak 44 positionable in alignment with the centre line of the inlet to equally divide the flow of hot melt thermoplastics material and means 45 for adjustably moving the flow divider along the passageway to proportion the flow of the material to the outlets. Hot plastics material passing from passageways 32, 33 may be further heated by heaters 70, 71 circling adapters 63, 65. In a modification of the apparatus the material to be heated to the higher temperature is passed through a heat exchanger associated with one of the outlets leading from the valve body, the heat exchanger comprising an elongated block having an elongated loop-like circuitous path extending along it and containing at least one melt mixer therein, and heating blocks extending along opposite sides of the block.
Patent GB-239054-A (GB)
Title: Improvements in apparatus for the making and repairing of roads, and like surfaces
IPC: E01C23/14
Filed: 1924-09-19
Abstract: 239,054. Hines, J. Sept. 19, 1924. Cauldrons ; surface-heating apparatus.-Vehicular apparatus for heating and tarring road surfaces is provided with a preliminary tar-heating tank h raised above a furnace j and having an inclined boittom k forming at one end a highly heated weir k<1> leading to a storage tank g also heated by the furnace gases. Removable perforated straining partitions r are provided between the two tanks. The furnace gases are propelled by a fan e through flues beneath the storage tank separated by a partition t, and by means of dampers u, v, w the gases may be passed either to a surface-heating hood, as described in Specification 235,748, or to a. chimney x. The. tank h, closed by a cover q, may be adapted to receive one or more barrels n hoisted by tackle o and resting on supports p.
Patent GB-500568-A (GB)
Title: Improvements relating to the operation of electric or electro-hydraulic presses
IPC: B30B15/26
Filed: 1937-08-11
Abstract: 500,568. Switching systems. ROMMLER AKT.-GES., H. Aug. 11, 1937, No. 22108. Convention date, Aug. 11, 1936. [Class 38 (iv)] A central control mechanism having a plurality of control elements each adapted to determine the time of connection or duration of supply of operating current, is adapted to control various electric or electro-hydraulic presses or machines as used for artificial resin in a determined relationship to one another. The central control may consist of one or more shafts c, e driven at the same or different speeds from a motor a and each operating through reducing mechanism a spindle h having a cam i which closes contacts j for a certain period whereby one or more machines plugged in to the sockets m may be energized. The phase and closing periods of the cams i differ. Any press, or the heating element therefor, may be plugged in to a selected operating element so as to receive the appropriate operating current.
Patent GB-728516-A (GB)
Title: Improvements in or relating to hydraulic feeding plants or apparatus for rock drills
IPC: F15B11/00
Filed: 1952-09-03
Abstract: 728,516. Reciprocating pumps. BOSCH GES., R. Sept. 3, 1952 [Sept. 4, 1951], No. 22132/52. Class 102 (1.). [Also in Groups XXII and XXIII] A reciprocating pump for supplying oil to the closed feed system of a rock drill (see Group XXII) is driven by a squirrel-cage induction motor through gearing 16, 17, Fig. 3, which rotates a shaft 18 carrying a cam-disc 19. A roller 20 carried by a stirrup 21 bears against the cam disc and the pump piston 23 is rotatably connected at its lower end to the stirrup. The piston 23 has an inclined control edge which closes openings 14 which allow a part of the induced oil to be returned to the chamber 12. A by-pass conduit 40 feeds oil to the end of a regulating rod 27 counterbalanced by a spring 29 which can be changed to vary the working pressure. The rod 27 has rack teeth along a portion of its length which engage a pinion on the piston 23 and thus rotate the latter to vary the position of the control edge 25.
Patent GB-539448-A (GB)
Title: Improvements in or relating to light applicators
IPC: A61C1/08
Filed: 1939-07-31
Abstract: 539,448. Surgical illuminating appliances. NEUGASS, E. A. July 31, 1939, No. 22156. Convention date, March 9. [Class 81 (ii)] [Also in Group XX] An appliance for transmitting light to illuminate cavities of the body for diagnostic and like purposes comprises an integral piece of plastic organic material, e.g. methyl methacrylate having a cylindrical or like portion for attachment to a support, and an opposite end portion extending at an angle and joined to the cylindrical &c. portion by a substantially wedge-shaped intermediate portion. The basal end 30 of the appliance is mounted adjacent to a source of light, e.g. a lamp 33, Fig. 1. In the form shown in Fig. 3 the outer surface 40 is flattened and may be matted or polished according to the requirement of a diffused light over this area or a concentrated light at the end 41. In a modification, Fig. 8, the terminal part 54 is bent at right angles flattened and turned inward at the end 55. In another modification, Figs. 16, 17, the appliance may be formed by compressing and bending a cylindrical body to the form shown. The Specification as open to inspection under Sect. 91 includes straight or curved appliances of uniform cross-section. This subject-matter does not appear in the Specification as accepted.
Patent GB-435430-A (GB)
Title: Improvements in machines for casting precious metals
IPC: B22D18/02
Filed: 1934-07-30
Abstract: 435,430. Casting. PLASCHKA, K., 17, Kremsergasse, Vienna. July 30, 1934, No. 22209. [A Specification was laid open to inspection under Sect. 91 of the Acts, Jan. 30, 1935] [Class 83 (i)] Metal - pouring.-A crucible a, for casting precious metals, as described in Specification 431,937 and mounted on a rotating arm so that centrifugal force may eject the contents therefrom into a mould h, is tightly secured to the mould by projections on the crucible engaging in grooves in a plate member l having perforated portions m through which the material of the mould is forced to secure the plate member l in position. The recessed securing member may be made of ceramic material with projections s, Fig. 5, for gripping the mould material and converging ribs t for engaging the crucible.
Patent GB-1221820-A (GB)
Title: Basic azo dyes
IPC: C09B44/04
Filed: 1968-05-10
Abstract: 1,221,820. Imidazolium salt. BADISCHE ANILIN- & SODA-FABRIK A.G. 10 May, 1968 [12 May, 1967], No. 22254/68. Heading C2C. [Also in Division C4] 1,2 - Dimethyl - 3 - [# - (N - phenyl - N - ethyl)- aminoethyl] - imidazolium chloride is prepared by reacting 1,2 - dimethyl - imidazole and N- ethyl - N - (# - chloroethyl) - aniline at 130- 150‹ C., the product being heated in o-xylene, separated and dried. Reference has been directed by the Comptroller to Specification 1,183,620.
Patent GB-755007-A (GB)
Title: Improvements in or relating to apparatus for observing the wear of current supply brushes
IPC: G01R31/34
Filed: 1954-01-08
Abstract: 755,007. Brush-holders for dynamo-electric machines. ZAHNRADFABRIK FRIEDRICHSHAFEN AKT.-GES. Jan. 8, 1954 [Sept. 5, 1953; Nov. 14, 1953], No. 22291/55. Divided out of 754,933. Class 35. A brush-holder is so arranged that when the brush has worn a predetermined amount an auxiliary circuit is completed to give a visual or other indication. As shown in Fig. 1, current from cable 137 is fed to the brush 132 by way of socket 155 or plate 156 secured to sleeve 138 which fits over resilient tongues 139 on a ring 154 electrically connected to conducting stem 134 to which the lead 135 is connected. The auxiliary circuit from the brush to the indicating lamp 148 is completed by insulated contact and lead 141, 140 the latter being connected to the base of member 134 where it is normally engaged by cup spring 145, connected to the brush by compression spring 133. When the brush has worn sufficiently to ease spring 133 and thereby enable spring 145 to move out of contact with the base of member 134, an indication is given by lamp 148. In an alternative arrangement, the brush carries a contact engageable with a contact let into the internal surface of the brush-holder, the latter being included in the indicator circuit which becomes operative (or alternately inoperative) on the brush contact reaching a predetermined position, dependent on its wear. Where the brush energizes a clutch of a gear box operated by a motor, the indicator circuit can be caused to disconnect said motor on a predetermined amount of wear on the brushes in the gear box.
Patent GB-363985-A (GB)
Title: Improvements in or relating to variable speed mechanism and power transmission gear
IPC: F16H33/08
Filed: 1930-07-24
Abstract: 363,985. Epicyclic variable-speed gearing. HALL, S. M. L., 34B, Clanricarde Gardens, and BEAUMONT, E. G. E., 20, Essex Street, Strand, both in London. July 24, 1930, No. 22313. [Class 80 (ii).] In automatic spur or bevel epicyclic variablespeed gearing in which the speed is controlled by the load, a carrier B supporting the planetwheels b is secured to the driving-shaft A and the annulus d to the driven drum D. The sun-wheel c is loose on the shaft and secured to eccentrics E, or to cams or cranks, adapted to actuate weights W which are either connected by links L to pivots m on the driving flywheel F or are carried on bell-crank levers pivoted to the flywheel. The oscillations of the weights impose a load on the wheel c to enable power to be transmitted to the drum D. In a modification, Fig. 13 (not shown), the eccentrics are secured to the shaft A and the weights are linked to arms secured to the wheel c. In a further modification, the constructions of Figs. 11 and 13 are combined, one epicyclic gear only being used. The weights W, Fig. 17, may be secured eccentrically on planet-wheels El, which are pivoted on the flywheel F and on a frame J turning therewith and engage a sunwheel e<1> secured to the sun-wheel c<1> of the main epicyclic gear c<1>, b<1>, d<1>, and, in a modification, Fig. 19 (not shown), the planets E<1> are carried in a frame secured to the wheel c<1> and the wheel e<1> is secured to shaft A. In a modification, Fig. 23, of the form shown in Fig. 17, the planets E<1> are carried in a loose frame J and gear with an annulus l<1> secured to the flywheel F, and in a modification of that shown in Fig. 19, the frame J is again free and the annulus l<1> is secured to the wheel c<1>. In place of using carrier frames, the outer surfaces of the weights may be made concentric with the planets E<1> and engage with inner tracks on the annulus and with rollers concentric with the shaft A. The throw of the eccentrics may be adjusted by axially-sliding wedges or they may float under the control of springs and hydraulic pressure acting through restricted passages so as automatically to adjust themselves as the thrust or pull of the weights varies. A reversing gear may be employed in series with the apparatus.
Patent GB-786112-A (GB)
Title: Improvements in the purification of high molecular weight alkyl-aromatics
IPC: C07C7/148
Filed: 1955-08-04
Abstract: Alkyl aromatics obtained by Friedel-Crafts synthesis from alkylchlorides containing more than 10 carbon atoms and hydrocarbons of the benzene series are purified by treating the neutralized, anhydrous crude alkyl-aromatic with an aluminium halide in the presence of gaseous hydrogen halide: the aluminium halide double compound formed is then separated and the purified alkyl-aromatic is neutralized with alkaline water and then distilled.  The FriedelCrafts catalyst may be aluminium chloride. The purifying treatment may be effected with hydrochloric or hydrobromic acids and aluminium chloride or bromide.  Up to 5 per cent of the aluminium halide may be used.  Hydrocarbons referred to are benzene, toluene and xylene.  A specified alkyl aromatic is benzene reacted with a chlorinated petroleum fraction containing normal paraffins, isoparaffins and cycloparaffins.  The crude anhydrous alkyl aromatic may first be fractionally distilled and only the last 30 per cent of the remaining monoalkylbenzene fraction treated.  After treatment the purified alkyl aromatics may be treated with an absorbent such as bleaching earth and then neutralized with caustic soda solution.
Patent GB-1114401-A (GB)
Title: Process for the production of alumina gels
IPC: C01F7/34
Filed: 1965-05-26
Abstract: An alumina gel is prepared by (1) mixing an aqueous solution of an aluminium salt with sufficient of an aqueous solution of sodium carbonate to increase the pH of the mixture to 3.92 to 3.98; (2) adding further sodium carbonate solution in the form of a fine spray to the mixture (while homogenizing the mixture) to give a slurry having a Na2O: Al2O3 ratio of 1.4:1 to 2:1; (3) spray drying the slurry, the amount of sodium carbonate added being such that the pH of the spray-dried slurry is 4.5 to 7; and (4) washing and drying the spray dried product.  The aluminium salt may be aluminium sulphate, chloride or nitrate and may contain 65-100 gm/litre.  The sodium carbonate solution may contain 5-15% by weight of the carbonate. After stage (1) the mixture may be discharged into a separate container to allow CO2 to escape.  The homogenization may be carried out using the "impact homogenization" technique.
Patent GB-1180734-A (GB)
Title: Improvements relating to Electric Circuit Assemblies
Inventor: RODGERS BRIAN GEORGE
IPC: H05K3/34
Filed: 1966-05-20
Abstract: 1,180,734. Printed circuit assemblies. PLESSEY CO. Ltd. 19 May, 1967 [20 May, 19661, No. 22462/66. Heading H1R. In an encapsulated multilayer printed circuit the terminal portions of the conductors of the different levels have parts thereof bent into a common plane which parts are supported by but not embedded in the encapsulating material. Thin strips of beryllium copper or brass etched to form the required configuration are superimposed in a stack and insulated from each other by strips of insulating tape coated with thermoplastic resin as represented by 1, Fig. 3. The terminal portions 2 of the conductors which extend laterally from different levels are bent in a press so that two rows of terminal parts 3 which lie in a common plane are provided along the assembly. The assembly is then potted In epoxy resin 6 so that the rows of terminal portions are left exposed. An integrated circuit or discrete miniature electronic components 7 have their terminal arms 8 connected to the terminal parts 3 and terminal parts 4 are soldered to conductors 10 on printed circuit board 11. Power is supplied from bus-bar 13 via strip terminals 12 to the printed circuit assembly 1.
Patent GB-659890-A (GB)
Title: Process for the manufacture of 8-hydroxyquinoline
Filed: 1949-08-30
Abstract: 8-Hydroxyquinoline is prepared by mixing glycerol, concentrated sulphuric acid, and o-aminophenol at a temperature of not over 120 DEG  C., gradually adding the mixture at said temperature to o-nitrophenol and an inorganic oxygen carrier consisting of iron, cobalt, or nickel, or an inorganic derivative thereof, and then heating to a temperature above 120 DEG  C. but not exceeding 140 DEG C. For example, the glycerol, sulphuric acid, and o-aminophenol are mixed at 70-80 DEG  C., heated to 80-100 DEG  C., and gradually added to the o-nitrophenol and carrier at 100-120 DEG  C., the final mixture being refluxed at 140 DEG  C.  The oxygen carrier may be, for example, ferrous sulphate, which may be added as such or formed in situ from iron or the oxide or carbonate.  Two examples of the process are given, the product being isolated via the copper salt. The Specification as open to inspection under Sect. 91 comprises the statement that any inorganic oxygen carrier may be employed. This subject-matter does not appear in the Specification as accepted.
Patent GB-1343732-A (GB)
Title: Manufacture of hollow bodies of synthetic resinous material
IPC: B29C49/06
Filed: 1971-04-19
Abstract: 1343732 Forming hollow bodies; biaxial stretching H HENCH Jnr 19 April 1971 [25 Feb 1970] 22534/71 Heading B5A Hollow thermoplastics bodies are formed by a method including biaxial stretching in the thermoelastic range of a moulded preform having a temperature gradient in the longitudinal direction in the region at which it is stretched, the gradient having one sign where the preform wall thickness increases in one longitudinal direction of the preform, and the opposite sign where the preform wall thickness decreases in the same direction. The temperature difference between the ends of the preform may be 6-20 C., according to the degree of crystallinity of the thermoplastics. The preform may be formed by injection moulding and the injection mould may be chilled. A single, constant temperature cooling medium may be used or different cooling media at different temperatures may be used to cool different zones of the mould. Alternatively, different zones of the mould may have a different thermal conductivity or the cooling ducts therein may have a different cross-section or be spaced differently from the mould cavity. After establishing the desired temperature gradient, the preform is biaxially stretched by blow-moulding. The preform may alternatively be formed by pressing or casting, a separate chill mould being used.
Patent GB-891544-A (GB)
Title: Improvements relating to lubricating greases
IPC: C10M169/00
Filed: 1959-07-02
Abstract: A lubricating grease is made by thickening to a grease consistency with an alkali metal soap of a hydroxy fatty acid a liquid petroleum lubricating oil base stock consisting of or containing an aromatic fraction which has been separated from a petroleum lubricating oil fraction.  The base stock may be prepared by blending a petroleum lubricating oil fraction, e.g. a dewaxed vacuum distillate having a viscosity in the range of 45-200 Redwood I seconds at 140 DEG F., and an aromatic fraction which has been separated from the same or different petroleum lubricating oil fraction.  Solvent extraction or chromatography may be used to separate the aromatic fractions, and in the latter case the chromatographic column, e.g. silica gel, or activated clay, may be eluted with acetone, ethyl alcohol, methyl alcohol, iso-propyl alcohol, ethyl ether, or iso-propyl ether to remove the aromatic fraction, and petroleum ether, n-hexane, or iso-octane to remove the aliphatic materials.  The soap, e.g. lithium hydroxy stearate, may be prepared by the saponification in situ of hydrogenated castor oil.
Patent GB-941044-A (GB)
Title: Ethers of polysaccharides
IPC: C08B11/187
Filed: 1960-06-29
Abstract: Cotton is treated with an aqueous solution of a strongly basic hydroxide and a propiolic ester of general formula <FORM:0941044/D1-D2/1> in which R is an alkyl group having 1 to 22 carbon atoms and R1 is a hydrogen atom or a hydrocarbon group free from aliphatic or cycloaliphatic unsaturation and having 1 to 6 carbon atoms, so as to form a carboxylatevinyl ether, which may be acidified to form a carboxyvinyl ether.  The cotton may be finely-divided, or in the form of a swatch, or of unbleached cotton muslin cloth.  Preferably, the strongly basic hydroxide is an alkali metal hydroxide and the propiolic ester is one in which R is an alkyl group having 1-6 carbon atoms, especially methyl propiolate.  A long list of suitable propiolic esters is given. In a preferred method, an aqueous solution of a strongly basic hydroxide is first reacted with the cotton, most of the excess hydroxide is removed and methyl propiolate is then reacted with the treated cotton.  The propiolate may be reacted with the cotton in the presence of a solvent for the propiolate which is a non-solvent for the aqueous hydroxide, e.g. tertiary butanol and dioxane, to minimise hydrolysis of the propiolate to propiolic acid, and the reaction may be carried out at from room temperature or below to about 100 DEG C.  Treated cotton is buff coloured, has a harsh hand and better abrasion resistance than untreated cotton.  Carboxyvinyl ethers of starch and cellulose, which may be made by a similar method (see Division C3) are also stated to be useful as sizing and finishing agents for textiles.  U.S.A. Specifications 2,516,632, 2,516,633 and 2,516,634 are referred to.